Pump



' sept. 19, "1944.

c. w. MOTT PUMP Filed May 18, 1942- matic-tired agricultural 'prising a hydraulic cylinder. 'present invention the improved air pump in Acorporates a frame structure, by means of Vwhich Patented Sept. 19, 1944 ,PUM' l Carl W. Mott,vLa' Grange, Ill., assigner to International'larvester Co mp'any, "ai corporation of;v

s applicaties Mafia, 194, semaine 443,345

' v continus.x (cuzco-52) This invention relates vto a pump and'more particularly to a power-operated iiuid pump.

The invention is concerned primarily with and has for its principal object the provision of an improved power-operated pump of the type adapted to iniiate the pneumatic tires of vehicles and the like. In particular the inventioniai'ms to provide a pump adapted for use with pneuhicles, wherein, in most cases, the agricultural implement, such as a tractor-mounted cultivator or the like, includes power lifting mechanismcom- According to the the hydraulic cylinder, when detached from the tractor, may be attached to the pump for operating the pump. The arrangement is such that tached from where. s Y

The principal object of the inventionvis to pro,- vide an improved pump of the type andjadapted for the purposes stated above.r An important vobject is to providev a frame r supporting structure, by means .ofl which there may `be attached tothe air pump a power device, such as a hydraulic cylinder` or the like.

the air pump and be used `else- And another object isto provide ,means eri-.15;

abling the quick and simple,attachmentsofthe cylinder to the pumpLthefmeans Valso enabling veasy disassemblyof the parts so that the cylinder or equivalent power devicemayb'ereadily' utilized elsewhere. Further objects and otherimportant features of the invention will appear from the following detaileddescriptionof a preferred embodiment of the invention as ,illustrated in the accompanying sheet of drawings, in which: l',

Figure l is a perspective view of the improved pump shown in a state ofpartialn disassembly; and Y Figure 2 is a transverse'sec'tional view taken through the assembled pump.

As shown in the drawing, the preferredl type of improved pump includes a first or lower, cylinder l ll comprising a cylindrical housing l l. hav; ing upper and lower end Walls I2 and lf3. The

Vupper wall isapertured asat I4 and receives a vertically extending tubularV piston rod l5, the

end of which insidev the housing l] i'sc'onne'ctejdto a'piston IB. Theconnection between the tubular member I5 and'thepistonfllispreferably formed byY means,Vv of a plug ,Ilurigidly fitted', into thejlower end' of themember AI5 andadaptedffto receive a boltA or cap screw I8 to vhold'the'pisto'n implements and ve.

,in.place, VI'he'lower end Vof the-cylinder'l is A.providedbwith an air hose I9 appropriatelyattached to thecylinder and associated with a suitable check valve 20, the details of which form 5 no part of the present invention and are therefore not illustrated.

- As best shown in Figure 1, the upper Wall l2 of the cylinder I0 is provided with a pair of upstanding ears 2l (only one of which is shown).`

v10 Each vear. has connectedthereto an upwardly the cylinder or other power device may be deY .extending .frame member or supporting element 22, the connection between the member 22 land `the. ear 2| being gmade by means of a bolt or p in 23- `so that the connection provides a pivot on an -axis transverse to the vertical axis ofv reciprocation of the piston lI6. The upper end of each member 22 is bent or hooked as at 24, and theextremity/ofwthis portion is cutout to provide a reduced .end portion 25. The Viframe structure 'thus` vtakes the form of an,` inverted U or bail A lbail.

f-having'lits leg portions connected to or mounted on Qthe' cylinder. I0 and having the hookedportions f24 adaptedv tovbe disposed together to provide'vtheclosed portion of the Uora bight in the V.As illustrated in Figure 2, the reduced portionsl 25 lof the'members 22 are adapted to beV disposed ,in 'overlapping relation and assume ,this position finsthe assembling ofA the device, at which time ,theseoverlappinggportions pass through an opening 23formedi n a cap or connecting portion .21 of a: s'econdor upper .cylinder 28. VKThis cylinder comprises aL-'cylindrical housing-29 having .oppo- ,siteendwalls, one of which is designated at 30 Y '35 land'theo'theror` upperfof which is formed as V`part ofv the connecting cap 21. s The cylinder is preferably ofthe hydraulic type and is operated vley the'lsupply of uidunder pressure through an inlet liney 3l.` A piston 32 isV reciprocable in 40 :the cylinder and vhas connected thereto a piston -rod v33. In the assembled device the rod 33 extends downwardly and ts, telescopically into the vtubular ,pistonrod I5.of the' lower cylinderl. This arrangement provides a detachable [connec- :4-57tion between'the two pistonjrods, and as previouslyjstated, the. disposition of the' end portions '25 of` the frame members' 22,thro',ugh theopen#V ing V26 inthe upper end oftheupper cylinder 28 f provides a'detachable connection` between theU- Y Y 'shapedvframe structure andthe cylinder 28.'

y .The cylinder ze asv iuustratedgis of therme waytype; `that is, inletand outlet offluidyfrom the cylinder 29' occur through the` line 3|. Ac-` 'cordingly, itis `desirableA tofhave provided means `for"-returning vthe 'pistonvto starting position connected a U-shaped clip llllykwhich-fprovidesVA -of the U, spa ced axially .from ,said wally-fapiston preparatory to a second stroke. `This means preferably takes the form of a spring-return device consisting of a pair of spaced plates 34 pivoted at 35 to an ear 36 on the tubular piston rod I5,

o these plates thus providing a link, at the other 'end of which is disposed a pivot pin 31, by means of which a connecting member 38 is attached to the link. This member extends upwardly and is offset intermediate itsends as-at 39; The uppermost end of the member 38 .is provided with a hook portion 40 which, as shown in Figure 1, is

adapted to hook over the cap member 21 of the upper cylinder 28. vThe spaced plates 34 carry transversely thereof a third pin 4I to which is means for connecting of vone :end -of -a -tension spring 43. The upper end of the spring is connected at 44 to the ose ber 38.

In the operation of the device as assembled- (Fig-ure 2)., uid is supplied through the line 3| to move the piston '43 l'downwardlyl'in the cylinder 28. This `movement is, of course, imparted lto the piston il 1 5` of the cylinder I 0,'and airY under pressureis yforced through the -air hose lll.V The cylinder -HJ is of relatively large capacity, and the device accordingly providesfa-'quick and eili- `cientmeansfor-inating pneumaticftires. It Will be understood, -of course, that `thefprincisples'of the invention that Vhave appeared from -the foremay be rattached jto `o r detached qfrom theremai-ning structure by means :of 'the novel arrangement ofl the frame -members 122 and connecting Vmember 38. The cylinder (28 Jfirstzwa .rr,ar:1ged 'in ting -or con necfted tojthe tubular :rpiston rod.' 'lj5 of the llower cylinder- 10. j Thejframe v.or supportinggmembersZZ-may then be;swung inwardly about =their-pivots23 so that vthe reduced por.-- tions 25 of the members pass through and overlapxwithin theop'ening :26 .,in the cap` member v21'l lat the,l1l0i3er end of j the cylinder 28. The connecting 'member 38-is then moved up against the tension of thejspringpandjthe hookv por- .Ltion ,4U is hooked over l[the upper [gend V of fthe cap 27.y lWith thep'parts iinvthifs "positiongthe completed lnumlp is `ready for operation as d escribed above. j It .is .believed that 'thejforegoing description will suice tojmake apparent'toj'those skilledin the art the numerous -advantagesamil .desirable features of the invention, it beine 111iderstoo,d, of course, thatrvarious .modiilcations Vand alterations may be `made in 'thepreferred t portion 3,9 ofthe mem? V2,358,5as

bight and the housing and including a fluid-receiving chamber with'opposed wall parts forcibly separable by the introduction of fluid into such chamber,l one of said parts being adjacently to said bight, the other of said parts having a rod |eitending oppositely from the one thereof toward said piston, said rod being disposed removably in said piston rod, and said parts being N4reactable outward1y-onthe hight and inwardly 10 through ksaid rods on the rpiston pursuant to the separation of said parts.

2. A fluid pump comprising a ycylindrical fluid housing having opposite end walls, one wall being apertured on the axis of the cylinder; a U- V`sl'laped `supporting `frame having its legs conltending through 'the alpi-rtured Wall toward rthe going description of thepreferred embodiment structure illustrated without departingrfrom .the .60

` nected to the housing'and extendingaxially .away Y fromfthapertured wail ,with the LbightY portion slidable axiallyin the housing; a Vtubular",piston Y rod removably ,connected tothe :.pistoninsidethe y housing. and exteridling through the iapertured end Vwall .toward the bight,,oftheU-frameyand bight 'ofthe 'U-lfra'me.; kanda motor ,disposed be- "tweenjthesupporting frame bight and the housingand including kailuid-receiving chamber with @DpOsed wall parts .forcibly separable axiallyof V'the `housing bythe introduction of fluid into said .lchamben one of' said parts being adjacently to theiramebig'ht and having means ao-rding yre- Lmovable connection of the overlapping bight-porvtions therewith, the other of .said ,parts including a rod extensiorrremovably fitted withthepis- ,ton rod for transmittingV force `to ,the piston `lpursuant to .the forcible separation -of said parts lWhile 'the one thereof reacts against the frame f3. Ajfluid rpump' comprising acylindrical fluid Y f1.0 'housing 'having' opposite end walls, one wall beposition with thepiston rod 33te1escopicallytbers having separable, attaching portions `at the bight .of the YUv; alipistonslidable in the hous in gya pistonrod `connected to `thefpiston and ex- "tending through theapertured -wall toward the ,biglfrtofz'the U-rame; andra motor disposedbejtween thesupporting .frame bight and the housing and including aluid-,receiving chamber hav- 'ing Qppsed wallpartsforcibly separable axial- ,1y of, vthe `housing 4by, fluid introduced into said chamber, one of tsaid .parts being adjacently to "the'frame bight and having a Areceiving section for theremovableattaohment of the bight por- .tions therewith, .and the other of said parts including a Jrod extension .detachably assembled Withrthe piston rod for transmitting force to the piston .pursuant `'to 4the forcible separation of said parts while the one thereof reacts against the frame bight. Y

A iuid pump comprising a. -fluid housing having opposite -end walls, one vwall being apertured; .a U-,shaped supporting frame having its legs connected to .the housing and extending awayfrom .theapertured wall with the bight portionoitheU Vspacediro'm said wall; ra vpiston s'lidable n.theh'ousing a. piston Arod removably nonneeted to the .piston ,and extending through Y 'thelaner'turedend wall-toward the bight of the uffnam'egand .a rmotor `disposed between thesuping a fluid-receiving chamber having opposed wall parts forcibly separable axially of the housing by iiuid introduced into said chamber, one of said parts being adjacently to the frame bight for reaction thereagainst, and the other of said parts including a rod extension detachably assembled with the piston rod for transmitting force to the piston pursuant to the forcible separation oi said parts while the one thereof reacts against the frame bight.

5. A uid pump comprising a cylindrical fluid housing having opposite end walls, one wall being apertured on the axis of the cylinder; a U- shaped supporting frame having its legs connected to the housing and extending axially away from the apertured wall with the bight portion of the U spaced axially from said wall; said tubular piston rod; and yieldable connecting means between the U-frame and the tubular piston rod.

, 7. A uid pump comprising a ycylindrical fluid housing having opposite end walls, one wall being apertured on the axis of the cylinder; a U-shapedsupporting frame having its legs connected to the housing and extending axially away from the apertured Wall with rthe bight portion of the U spaced axially from said wall; said frame including a pair of complementary members having separable,. overlapping portions at frame including a pair of complementary mem- Y bers having separable, overlapping portions at the bight of the U; a piston slidable axially in the housing; a tubular piston rod removably connected to the piston inside the housing and extending through the apertured wall towardthe bight of the U-frame; and a fluid pressure device' including a cylinder having a portion at one end formed with an opening removably engaging the overlapping portions of the members of the U-frame, and -a piston including a piston rod'telescopically fitting the aforesaid tubular piston rod and removably and operatively connected thereto.

6. A fluid pump comprising a cylindrical fluid housing having opposite end walls, one wall being apertured on the axis of the Cylinder; a U- shaped supporting frame having its legs connected to the housing and extending axially away from the apertured'wall with the bight portion of the U spaced axially from said wall; said frame including a pair of complementary members having separable, overlapping portions at the bight of the U; a piston slidable axially in the housing; a tubular piston rod removably connected to the piston inside the housing and extending through the apertured wall toward the bight of the U-frame; a uid pressure device including a cylinder having a portion at one end formed with an opening removably engaging the overlapping portions oi the members of the U- frame, and a piston including a piston rod removably and telescopiscally fitting the aforesaid movably and telescopically fitting the aforesaid tubular piston rod; and a connection between the U-frame and the tubular piston rod, comprising a link connected to the tubular piston rod, an arm connected at one end to the link and having its other end formed to engage the cylinder of the pressure device, and a tension spring connected between the arm and the tubular piston rod.

8. A fluid pump, comprising a lower, upright cylinder having a lower end wall and an apertured upper wall; a piston slidable in the cylinder and including a piston rod extending upwardly through the apertured wall; an upper cylinder arranged above and coaxially of the lower cylinder and including a downwardly extending piston rod; means detachably connecting the piston rods together; means for connecting the cylinders together, -comprising a pair of parallel members including pivotal connections at their lower ends to the lower cylinder and extending upwardly at opposite sides of the second cylinder; and means detachably engageable between the upper ends of said members and the upper cylinder, said members being movable apart about their aforesaid pivotal connections l for detachment from the upper cylinder.

CARL W. Mofrr. 

